There are several ways to rid your yard of the annoying mushrooms that sprout over your beautifully manicured lawn and hard grown trees. Here are some methods on how to kill mushrooms in your yard:
Keep your lawn free of excess water (only water your plants as much as is needed by the plants) as excess water will cause fungus and mushrooms to sprout.
Pick up any litter, such as pet excrement and grass trimmings. Mushrooms grow on old mulch, animal waste, and rotting tree stumps, providing mushrooms with nutrients while the excess water helps the mushroom breakdown and digest these nutrients. So keeping your lawn free from all of these will reduce the number of mushrooms living there. It will also prevent spores from neighbors from growing into mushrooms! Additionally, irrigating and aerating the soil better will help with keeping the lawn drier.
Use nitrogen fertilizer to speed up the decomposition of organic matter and reduce the possibility of mushroom growth. Apply one pound of readily available nitrogen for every 1000 square feet. Do not use the slow release or water-insoluble formulations.
Pick the mushrooms up as soon as they appear (before they produce spores). Once this has happened, it is impossible to get rid of the spores as they are all extremely small and not worth spending time on finding and removing. Identify the mushrooms before they mature by making sure that they have no exposed gills. So long as they are not mature, you do not have to worry about spreading spores – even just kicking them at this stage can spare you mushroom spore contagion.
Lawn fungicides, such as Bayleton and Daconil are available to treat your lawns. Of the two, Bayleton is recommended at 1.5 to 3 pounds every 1000 square feet for prevention and 6 pounds for every 1000 square feet for getting rid of a lawn already infected with mushrooms.
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